linux-kernel - Re: [PATCH RFC v5 6/6] usb: dwc3: dwc3-exynos: add host init

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Date:   Mon, 9 May 2022 04:30:10 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Daehwan Jung <dh10.jung@...sung.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>,
        Tony Lindgren <tony@...mide.com>,
        Juergen Gross <jgross@...e.com>, Arnd Bergmann <arnd@...db.de>,
        Matthias Kaehlcke <mka@...omium.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:DESIGNWARE USB3 DRD IP DRIVER" <linux-usb@...r.kernel.org>,
        "moderated list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES" 
        <linux-samsung-soc@...r.kernel.org>, sc.suh@...sung.com,
        taehyun.cho@...sung.com, jh0801.jung@...sung.com,
        eomji.oh@...sung.com
Subject: Re: [PATCH RFC v5 6/6] usb: dwc3: dwc3-exynos: add host init

On Fri, May 06, 2022 at 08:45:39AM +0200, Krzysztof Kozlowski wrote:
> On 06/05/2022 08:31, Daehwan Jung wrote:
> > This is for xHCI Host Controller driver on Exynos SOC.
> 
> https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95
> 
> > It registers vendor ops before loading xhci platform driver.
> 
> It does not explain why do you need it, why do you do it, what is this
> going to achieve or give us.

Nver mind that the whole concept if "vendor" ops doesnt make any sense
whatsoever, as I've repeatedly pointed out.  The "vendor" is completely
irrelevant for a Linux driver.